The Linden Tree: Drawing Kevin,
10 years old here, working on a perspective drawing. Because precision
counts here, he is using an old fashioned T-square, one of the many
tools we have on hand. In addition to the theory behind perspective --
there is one big secret -- and some of the history, students learn how
to find the center of a rectangle, how to divide an area in to a given
number of equal parts and other precursors to Geometry.